The Knob of the Office Chair Falls Off

If the knob of the office chair falls off, you can follow these steps:

I. Check the Condition of the Components First, check whether the fallen knob and related components (such as screws and clips) are intact. If the components are not broken, deformed, or worn, you can proceed with the installation directly. If there is damage, you need to purchase suitable new components before operating. For example, if the screw of the reclining force control knob of the Sihoo S300 ergonomic chair becomes loose and falls off due to structural design issues, you need to determine whether the screw can be reused or needs to be replaced.

II. Prepare Tools Select tools according to the type of the knob:

• For ordinary knobs: Usually, a screwdriver (Phillips or flat-head), tweezers, or pliers (for picking up small parts) are required.
• For threaded knobs: Installation may require counterclockwise rotation, so ensure that the size of the screwdriver matches. The tools should be clean and undamaged to avoid scratching the components during installation.

III. Install the Knob

1. Clean the Base: Before installation, check whether there are any debris or residual parts in the hole of the chair base to ensure there are no obstructions.
2. Insert the Knob:
   • If the knob has threads, insert it into the base hole and then rotate it counterclockwise to the correct position. Avoid applying excessive force to prevent the threads from slipping.
   • If it is a cylindrical knob, use a screwdriver to tighten the screws on the edge with moderate force (too tight may damage the components, and too loose may cause the knob to become loose).
3. Special Models Note: For the modular design knob of the Sihoo S300, if the screw becomes loose and falls off, prioritize tightening the screw. If the module is damaged, contact after-sales service for replacement (the cost is about 870 yuan), but be alert to possible future issues due to design defects.

IV. Check the Function After installation, twist the knob to test its function:

• Adjust the height of the chair or the reclining force to ensure smooth operation without jamming.
• If the knob does not work properly, recheck the installation steps (such as whether the screws are tightened and whether the components are aligned) or replace other damaged components.

Precautions

• Avoid applying excessive force during installation to prevent component breakage or affecting the stability of the base.
• If you are not familiar with the operation, it is recommended to contact a professional repair person, especially for high-priced chairs with modular designs (such as the Sihoo S300). Self-repair may affect the warranty or cause secondary damage.